Mining apparatus



M. P. HOLMES MINING APPARATUS Original Filed July 5. 1924 March 27,

2 Sheets-Sheet Q 23% i Q Q March 27, 1928. 1,664,385

M. P. HOLMES MINING APPARATUS Original Filed July 5. 1924 2 Sheets-Sheet 2' Patented Mar. 27, 1 928.

UNITED STATES A 1,664,385 PATENT OFFICE.

MORRIS IP. HOLMES, OF CLAREMONT, NE\V HAMPSHIRE, ASSIGN OR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

M ll TING APPARATUS.

Application filed July 3, 1924, Serial No. 723,953. RenewedlDecemb'er 20, 1926.

My invention relates to mining apparatus.

An object of my invention is to provide an improved mining apparatus. Another ob ject of my invention is to provide an improved transport and cutting truck for such an apparatus. Another object of my invention is toprovide a mining machine transport and cutting truck of an improved construction especially adapted to use in low veins of coal, wherebythe machine may be transported about the mines with facility.v

Still another object of my invention is to provide an improved mining machine transport and cutting truck having improved driving means therefor, whereby the same may be driven at different speeds directly from'the mining machine feeding mechanism. A still further object of my invention is to provide an improved mining machine transport and cutting truck having reversing mechanism thereon, whereby the truck may be driven in opposite directions relative to a trackway at fast or slow speeds directly from the mining machine feeding mechanism. Still another object of my invention is to provide an improved transport and cutting truck relative to which a mining machine is adapted to be loaded or unloaded or to which a mining machine be secured, thereby permitting the mining machine to out on the truck or to cut on the bottom in accordance with the longwall or the room and pillar methods of cutting, the truck being driven directly from the mining machine feeding mechanism. other objects and advantages of my invention will, however, hereinafter more fully appear.

In the accompanying drawings I have shown for purposes of illustration two forms,

which my invention mayassume in practice.

In these drawings,. Fig. 1 is a plan view of myimproved truck with a mining machine carried thereon adapted to operate as a mounted cutter, the dropfront frame being removed and the cutter bar being shown in a plurality of positions, the view being partially in section to facilitate illustration.

Fig. 2 is a side elevation, partially in section, of the machine shown in Fig. 1, the

dro 'yfront frame being shown in the plurality of positions thereon. 1

These and is a detail sectional view of a por tion of my improved truck driving mechamsm. a v

Fig. 4; is a detail sectional view through one of the frictional controlling devices.

Fig. 5 is a side elevation of a modified form of the truck shown in'Figs. 1 and 2.

In' this illustrative form of my invention shown in Figs. 1 to 4 I have provided a truck or' guidingfframe 1 suitably mounted on wheels 2 secured to axles 3 journaled in the usual manner in axle boxes 4- and adapted to move relative to a trackway 5. a The forward end of the truck frame has pivoted thereon at 6, a detachable drop front loading or unloading frame portion 7 provided with an inwardly projecting operating" portion 8 which is adapted to be engaged by the bottom of the mining machine during the loading or unloading operation to raise and lower the same relative to the mine bottom. The guiding frame 1 is also adapted to receive a selfprope1led, flexibly fed mining machine, generally designated 9, of the same generaltype as that describedv and claimed in my copending application, Ser. No. 619,839, filed .Feb. 19, 1923, the mining machine being of the longwall type adapted to slide on itsown bottom on the'mine bottom and having an elongated frame 10 which consists of afeed frame section 11, a motor frame section 12, and a cutter frame section 13, the frame sections 11, 12 and 13 be ingsecuredtogetherin any suitable manner. Herein, the section 12 contains a unidirectional pressure fluid actuated driving motor (not shown) although any suitable type of air, electric or other motor may be utilized, if desired; The frame 10 further presents parallel plane surfaces 14 and 15 upon which the machine is selectively adapt-v outer edges of thecutter bar in a well known 7 manner through suitable power connections (not shown) from the driving motor. The cutter bar 16' is as shown herein also adapted to be swung or slued about its pivot 17 into opposite lateral positions relative to the machine frame and at right angles thereto or into alinement with the longitudinal axis of the machine frame or into positions intermediate thereof, and as shown herein is also adapted to be locked in these positions by means of a pin 19 adapted to register with suitably located apertures 20 formed in a flanged portion of the cutting frame 13. As illustrated, a detachable swing arm, generally designated 21, may also be inserted inv one of the unused apertures 20 thus permitting the machine to be utilized as aroom and pillar machine when removed from the truck in a manner described in my copending application Ser. No. 347 ,571, filed Dec. 26, 1919.

cooperate with a flexible feed chain23 durl ing the loading and unloading movements of the machine relative to the truck, during cutt1ng,-during the swinging operation of the bar. and when the machine is cutting on mine bottom at a The feed sprocket 22 is herein, as in my prior the bottom as either a longwall or a room shown) at a fast speed in the opposite direction under the control of a similar frictional controlling device generally designated 25, these controlling devices 24 and 25 forming a part of the feeding mechanism of the machine per se and being adapted to be alternatively operated as described in my copending application Ser.

No. 619,839 by means of acontrolling member or hand wheel 26 disposed at the rear end of the frame section 11. I In my improved construction it will be observed that an annular member 27 is suitably secured to and rotatable with. the feed sprocket driving shaft 28 by means of a suitable bolt connection 29, and that this 7 member 27 is provided with'internal clutch teeth 30 adapted to cooperate with external clutch teeth 31 formed on a longitudinally extending horizontal shaft 32 suitably journaled in bearings 33 in a frame or casing member 34 suitably secured to the rear end of the truck frame1. The rear-ward end of the shaft 32 is provided witha bevel pinion, 35 which is adapted to mesh constantly with bevel gears36 and 37 loosely journaled on a transverse horizontal truck driving shaft 38, 1 the gears 36 and 37'being adapted to ternatively connected to the shaft 38 by be almeans of a jaw clutch 39- provided with shipmechanism 40and a suitable operating A feed operating member or sprocket 22 is alsoherein suitably journaled on a longitudinally extending horizontal axis on the frame section 11 and adapted to 'gular position,

34. The shaft 38 is suitably journaled in bearings 42 and 43 suitably carried by the truck frame and the gear casing 34, respectively, and has secured thereto at one end a spur gear 44 adapted to mesh witha spur gear 45 suitably secured to a transverse horizontal shaft 46 disposed parallel with and below the shaft 38 and to which a sprocket ,4? is suitably secured which is adapted to drive the truck wheels 2 by means of chain and sprocket connections 48 and 49 disposed within the outer limits of the truck frame. The shaft 38 is provided. with a suitable frictional bra-king device 50 pr0- vided'with a suitable operating handle 51; :5

which is adapted to be applied to retard the rotation of the shaft 38, for instance, when the truck is moving relative to a trackway of a steep gradient. i

In the use of my improved mining .appae a ratus it will be observed that the truck may be driven relative to the trackway at a fast or ata slow speed in opposite directions directly from the mining machine feeding mechanism under the control of the 'mining,

machine feed control frictional devices 24 and 25, andmay also be driven in the'reverse of these directions by means-of the'reverse gears '36 and 37 and the controlling clutch 39 carried on the truck, any desired variants of these speeds of course also being obtainable. The truck may be controlled in either of these directions by means of the braking device .50. It will also be noted that the mining machine may be removed from the truck by using the in a usual manner, the teeth 31 on the'shaft 32 separating at this time from the teeth 30 formed on the member 27 carried 'by the feed sprocket 22 and the drop front 7 autoflexible feeding member matically lowering to the mine bottom as the chine may be rigidlyfbolted to the truck as by screws 52, the drop front frame then be- 111,9; removed, and the cutter bar swung to the dotted position indicated by A in Fig. 1 and locked in that position by'means of thelocking pin permitting the machine and its truck-to advance underthe propulsion of the truck wheels and the control of the friction 24' to efiect cutting at the desired slow or cuttingspeedof approximatelythree feet per minute while'makingits sumping cut. The bar is then slued or swung by the flexible feedingmember to its opposite anas indicated-by dotted lines by B in Fig. 1, and the truck retracted from the face, in a like manner, this being efmanner.

fected by-simply throwing the clutch 39to reverse the'truck wheel drive and this operation likewise being under the control ofa mining machine feed controlling mechanism. During transport from one place to another the mounted cutter will obviously be driven through the fast feed friction at the desired transport saeed of approximately 100 feet per minute. It will also be noted that the machine may slide selectively on the plane surfaces 14 and 15 on the mine bottom or on the truck,1consequently varying the plane of the cutter bar relative to the mine bottom or to the truck when cutting on the latter.

" In the form of my invention shown in Fig. 5 it. will be observed that a truck body is mounted on wheels 56 movable relative to the trackway 5, this truck body carrying an adjustable frame 57 on which is carried the complete mining machine 9 and the truck driving mechanism including the shaft 38, which is substantially the same as that shown in Figs. 1 and 2. I As shown, the mining machine 9 drives the truck wheels from the shaft 38 under the control of the frictional, devices 24 and 25'hereinbefore de scribed through a chain and sprocket connection 58 to an intermediate transverse horizontal shaft 59 journaled on the frame 57 and the chain and sprocket connections 60 and 61 A plurality of lifting jack mechanisms, generally designated62, which are of a type substantially similar to those described in mycopendi'ng application Ser. N 0.

carried by the truck body 55. In order to maintain the shaft 59 in a fiXed spaced relation' with respect to the rear axlev of the truck, I'have provided a spacing member 7 0 which comprises elements 7 land 72 pivoted together at 78, the latter element also being pivoted at 74 on the front axle 75 of the truck, while the member 71v is pivoted at 76 to the adjustable frame57. 7 By this mechanism it will be observed that as the jack mechanisms 62 areoper ated the frame 57 is caused to move upwardly'in an arouate path about anaxis in a p'redetermin'ed fiXed'relationship withrespect to the, front axle 75, at the same time through the pivotal connection 7 3 between elements 71' and 72,

the lateral adjustment of the framelis per- 1nittecl. Furthermore, attention is directed to the fact that by inaklng connection between the frontaxle and the shaft 76 it is possible to maintain the truck driving shaft 38 and the shaft 59 in operative driving relation to the truck wheels in any vertically adjusted position of the frame 57, thereby permitting'the truck to be propelled re'lativoto the trackway directly from the mining machine feeding mechanism including the frictional controlling members 24 and 25 at a slow cutting speed or at a fast haulage speed. The operation. of the mining machine in this form of my invention is substantiallyithe same as thatbrought out in'regard'to Figs. 1 and 4, and further description is therefore deemed unnecessary. c T

lVhile I have in this application specifically described two forms which my invention may assume in practice, it will be understood that these forms of the same are shown for purposes of illustration and that the invention may be modified and embodied in various other forms Without departing from its spirit or the scope of theappended' claims. What'I claim as new and desire to'secur'e by Letters Patent is: v v V 1. In a mining apparatus, a wheeled truck, a unitary, separably operable mining machine thereon operable to cut in different planes when supported'in inverted positions,

and. means to propel said-truck therefrom when disposed in either position, 7

2. In a mining apparatus, a wheeled truck,

a unitary, separably' operable mining ma chine thereon operable to out in different planes when supported in inverted positions, and means to propel said truck therefrom at either a cutting speed or, a transport speed when disposed in either position.

3. In a mining apparatus, a wheeled truck, a unitary, separably operable vmining machine thereon operable to cut in different planes when supported'in inverted positions, and mean's'to propel said truck therefrom at either a cutting speed or a. transport speed in opposite directions when disposed in' either position. r V

4. In a mining apparatus, a wheeled truck, a unitary, separably operable mining machine thereon operable to cutin different planes when supported in inverted positions, and means to propel said truck-from SEl'lCl mining machine at dlfferent speeds and in position. v V

5. In a mmmgapparatus, a

chine thereon. operable to cut indifferent planes when supported in inverted POSI- tions, means for propelling said truck from said minmg machine at different speeds in opposite directions. when disposed in' either position, and means .to reverse said truck at any speed. H v,

' 6. Inajrnin'ing apparatus, awheeled truck,

wheeled'truck, .a unitary, separably'opier'able' minlng'maa miningmachine thereon operableto cilt in opposite directions when disposed in either different planes when supported in inverted positions and provided with a feed operating member adapted to cooperate directly with flexible feeding means, and means to propel said truck from said feed operating member at a plurality of speeds in opposite directions in different positions of said machine.

7. In a mining apparatus, a wheeled truck, a unitary, separably operable mining machine thereon operable to cut in different planes when supported in inverted positions and provided with a feed operating member adapted to cooperate directly with flexible feeding means, and means to propel. said truck from said feed operating member at a plurality of speeds in opposite directions in different positions of said machine, and means to-reverse said truck at any speed.

8. In a mining apparatus, a wheeled truck, a mining machine thereon provided with a feed operating member disposed on a longitudinally extending horizontal axis and adapted to cooperate directly with flexible feeding means, and means adapted to be clutched to said member to propel said truck from said mining machine ata plurality of speeds in opposite directions including re versing mechanism on said truck.

9. In a mining'apparatus, a wheeled truck, a mining machine thereon provided with a feed operating member adapted to cooperate directly with flexible feeding means, means -to propel said truck at a plurality of speeds -from saidfeed operating member, and reversing mechanism for said truck carried on the latter and including a clutch disposed between said feed operating member and said truck wheels.

10. In a mining apparatus, a wheeled truck, a unitary, separably operable mining machine thereon including means'to propel said truck at different speeds and means to vary said speeds, and reversing mechanism for said truck on the latter including a clutch, bevel gearing, and a transverse shaft operatively connected to the wheels.

11. In a mining apparatus, a wheeled truck, a unitary, separably operable inining machine thereon including means to propel saidtruck at different speeds and means to vary said speeds, reversing mechanism for said truck on the latter including a transverse shaft journaled thereon and operatively connected to the wheels, and means to brake the rotation of said shaft 12. In a mining "apparatus, a wheeled truck having a frame adjustable thereon into different horizontal planes, a unitary, separably operable mining machine carried on saidad ustable frame including a feed operating mechanism providing a cutting speed and a. transport speed, transmission means disposed between said feed operating mecha- .,nism and the wheels of said truck operative to feed the latter at either cutting speed or transport speed, and means to maintain said transmission means operative irrespective of the adjusted position of said machine carrying frame. V

18. In a mining apparatus, a Wheeled truck having a frame adjustable thereon into different horizontal planes, a unitary, separably operable mining machine carr ed on said adjustable frame including a feed operating member and means for rotat ng the latter at avcutting speed or a transport speed, transmission means disposed between said feed operating member and the wheels of said truck operative to feed the latter at either cutting speed or transport speed, and means to maintain said transmission means operative irrespective of the adjusted position of said machine carrying frame. I

14. In amining machine, a wheeled truck having a frame adjustable thereon into different horizontal planes, a unitary, separably operable mining machine carried on said adjustable frame including feed op erating mechanism operable at a different speed in opposite directions, transmission means disposed between said feed operating mechanism and the wheels of said truck, and means to maintain said transmission operative irrespective of the adjusted position of said machine carrying frame. f

15. In a mining apparatus,'a wheeled truck having a frame adjustable thereon into different horizontal planes, a unitary, separabl T operable mining machine carried on said adjustable frame operable to cut in different planes when supported in inverted positions including a feed operating memher and means for rotating the latter at a cutting speed or a transport speed, transmission means disposed between saidfeed oper-- ating member and the wheels of said truck operative to feed the latter at either' cutting speed or transport speed, and means ,to maintain said transmission means operative irrespective of the position of said mining machine.

16. In a mining apparatus, a wheeled truck having va frame adjustable thereon into different horizontal planes, a unitary,.

separably operable mining machinejcarried on said adjustable frame operable to cut in different planes when supported in inverted positions including a feed operating member disposed in the vertical center of said machine and means for rotating the latter at a cutting speed or a transport speed, transmission means disposed between said feed operating member and the wheels of said truck operative to feed the latter at either cutting speed or transport speed, and means to maintain said transmission means operative irrespective of the position of saidrmining machine. 7 7

'17. In a mining apparatus, a ;wheeled truck having a frame adjustable thereon into different horizontal planes, a mining machine carried on said adjustable frame operable to cut in different 'planeswhen supported in inverted positions including a feed operating member disposed in the vertical and longitudinal center of said machine and means for rotating the latter at a cutting speed or a transport speed, transmission means disposed between said feed operating at dififerent speeds in opposite directions and friction controlling means for each speed, transmission means disposed between said feed operating member and the wheels of said truckfand"means to maintain said transmission'means' operative irrespective of the adjusted position of said mining machine. i

19. In a mining apparatus, a wheeled truck, a unitary mining machine of the separably operable type thereon having a frame providing a plurality of surfaces upon each of which the machine may rest and operable to cut in difierent planes when supported in different positions on said surfaces, and means to propel said truck therefrom when disposed in such different positions. I I i 20. In a mining apparatus, a wheeled truck, a mining machine comprising cutting mechanism and a frame providing a plurality of plane surfaces upon each of which said machine may rest during cutting and so related to said cuttingmechanism that the latter occupies differentplanes when said machine is resting on said different surfaces, and means on said machine and truck co-- operating when said machine rests upon any of said surfaces upon said-truck to effect truck propulsion.

21. In .a mining apparatus, a wheeled truck having a machine supporting surface, a unitary mining machine of the separably operable type comprising cutting mechanism and a frame providing a plurality of surfaces upon each of which said machine may rest during cutting and so relatedto said cutting mechanism that the latter occupies different planes when said machine is resting on said different surfaces, and means on said machine and truck cooperating when said machine rests upon any of its said surfaces upon the machine supporting surface of said truck to effect truck propulsion.

22. In a mining apparatus, a Wheeled truck, a mining machine comprising cutting mechanism and a frame providing a plurality of surfaces upon each of which said machine may rest during cutting and so related to said cutting mechanism that the latter occupies different planes when said machine is resting on said different surfaces, and means on said machine and truck cooperating when said machine rests upon any of said surfaces upon said truck to effect truck propulsion including a power transmitting element on said machine constituting the terminal truck driving element thereon equidistant from each of said surfaces upon said'machine.

23.*In a mining apparatus, a wheeled truck, a mining machine comprising cutting mechanism and a frame providing a plurality of surfaces upon eachofwhich said machine may rest during cutting and so related tosaid cutting mechanism that thelatter occupies different planes when said machine is resting on said different surfaces, and means on said machine andtruck cooperating when said machine rests upon any of said surfaces upon said truck-to effect truck propulsion including power transmission means on said machine constituting the terminal truck driving means thereon equidistant from each of said surfaces upon said machine,

24; In a mining apparatus, a wheeled truck, a mining machine thereon operable to out in different planes when supported in different positionsand provided with a feed operating-member adapted to cooperate directly with flexible feeding means, and means to propel said truck from said feed operating member at a plurality of speeds in opposite directions in different positions of said machine. a

25. In a mining apparatus, a wheeled truck, a unitary mining machine of the separably operable type thereon operable to cut in different planes when supported in diffen ent positions and provided with a feed" operating member, means to propel said truck from said feed operating member at a plurality of speeds in opposite directions in different positions of said machine, and means to reverse said truck at any speed.

26. In a mining apparatus, a wheeled truck, a mining machine thereon provided with afeed operating memberadapted to cooperate directly with flexible feeding means and disposed on an axis extending longitudinally of the mining machine, a coaxial driv ing shaft therefor, and means rotatable by said shaft for propelling said truck from said mining machine in opposite directions including reversing I mechanism. on said truck. v V

27. In a mining apparatus, a wheeled truck, a mining machine thereon provided with a feed operating member'adapted to i truck, a unitary mining machine of the sepathereon having pivoted and a shaft extending said machine, reversing truck driven directly by rably operable type cutting mechanism longitudinally of mechanism on said said shaft and operatively connected in driving relation with the truck wheels, and means for swinging said cutting mechanism including an element rotatable with said shaft. 7

29. In a mining apparatus, a wheeled truck, a mining machine thereon having piv- 'oted cutting mechanism and a shaft extending longitudinally of said machine, reversing mechanism on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for swinging said cutting mechanism including an element rotatable with said shaft and flexible connections between the same and said cutting mechanism.

30. In a mining apparatus, a wheeled truck, a unitary mining machine of the separably operable type thereon having cutting mechanism mounted topermit adjustment thereof and a shaft extending longitudinally of said machine, reversing mechanism on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for adjusting said cutting mechanism including an element rotatable with said shaft.

31. In a mining apparatus, a wheeled truck, a mining machine thereon having cutting mechanism mounted to permit adjustment thereofand a shaft extending longitudinally of said machine, reversing mechanism on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for adjusting said cutting mechanism including an element rotatable with said shaft and flexible connections between the same and said cutting mechanism.

82. In a mining apparatus, a wheeled truck, a unitary mining machine of the separably operable type thereon having pivoted cutting mechanism and a shaft extending longitudinally of said machine, reversing mechanism on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for swinging said cutting mechanism including an element rotatable with said shaft and nearer to the cutting mechanism than is said reversing mechanism.

7 33. In a mining apparatus, a wheeled truck, a mining machine thereon having pivoted cuttingmechanism and a shaft extending longitudinally of said machine, reversing mechanism on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for swinging said cutting mechanism including an element rotatable with said shaft and nearer to the cutting mechanism thanis said reversing mechanism and flexible connections between the same andsaid cutting mechanism,

34. In a mining apparatus, a Wheeled truck, a unitary mining machine of the separately operable type thereon having cutting mechanism mounted to permit adjustment thereofand a shaft extending longitudinally of said machine, reversing mechanism' on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for adjustin element rotatable with said shaft and nearer to the cutting mechanism than is said reversing mechanism. i a

35. In a mining apparatus, a wheeled truck, a mining machine thereon having cutting mechanism'mounted to permit adjustment thereof and a shaft extending longitudinally of said machine, reversing mechanism on said truck driven directly by said shaft and operatively connected in driving relation with the truck wheels, and means for adjusting said cutting mechanism in-- cluding an element rotatable with said shaft and nearer to the cutting mechanism than is said reversing mechanism and flexible connections between the same and said'cutting mechanism.

36,1111 a ,mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of the machine and adapted to cooperate with flexible feeding means, and mechanism for propelling said truck comprising an element connectible directly to said feed operating member for rotation therewith. r 37 .In a mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of the machine and adapted to cooperate with flexible feeding means, and mechanism for propelling said truck in opposite directions comprising reversing mechanism, and an element connectible directly to said feedoperating member for rotation therewith.

38. In a mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of the machine and adapted to cooperate with flexible feeding means, and mechanism for propelling said said cutting mechanism including an truck at either a cutting speed or a transport speed comprising an element connectible directly to said feed operating member for rotation therewith. j 39. In a mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of the machine and adapted to cooperate with flexible feeding means, and mechanism for propelling said truck at either a cutting speed or a transport speed in opposite directions comprising an element connectible directly to said feed operating member for rotation therewith.

40. In a mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of themachine and adapted to cooperate with flexible feeding means, said feed operatin member beingro tatable in opposite directions, and mechanism for propelling said truck in opposite directionscomprising an element connectible directly to said feed operating member for rotation therewith. I

41. In a mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of the machine and adapted to cooperate with flexible feeding means, said feed operating member being rotatable in opposite directions at either a cutting speed or atahigher speed, and mechanism for propelling said truck in opposite directions at different speeds comprising an element connectible directly to said feed op erating member for rotation therewith.

42. In a mining apparatus, a wheeled truck, a mining machine thereon having a feed operating member rotatable on an axis extending longitudinally of the machine and adapted to cooperate with flexible feeding means, said feed operating member beingrotatable at a plurality of speeds in opposite directions, and mechanism for propelling said truck at different speeds comprising an element connectible directly to said feed operating member for rotation therewith, and means on said truck to reverse the same at any speed.

43. In a miningapparatus, a truck frame having running gear, a mining machine having opposed plane surfaces upon which it is disposable and constructed to cut when slid ing directly upon the mine bottom on either of such surfaces, and means to. connect such machine in driving relation to said running gear when said machine is disposed in either position on said frame.

44. In a mining apparatus, a truck frame having running gear and propulsion mechanism therefor, a mining machine mounted thereon, said machine being of the type adapted to slide on the mine bottom during .46. Mining cutting and having a plurality of surfaces each adapted to supportthe-machine, and means foroperatively connecting said propulsion mechanism with'said machine when the latter is disposed on any of said surfaces on said truck frame including a member on said. machine occupying approximately the same position relative to said frame in the several dispositions of the machine thereon.

'45. Mining apparatus comprising a wheeled truck, and a unitary mining ,machine of the separately operable, swinging cutter bar type carried on said truck and disposable thereon in different positions in which said bar is swingable indifferent planes, said machine and truck having cooperating parts adapted to effect truck propulsion including a drivingmember onsaid machine and a driven member on said truck, said driving member being so disposed on said machine that the position of its'axis of rotation is the same with said machine disposed for bar swing in different planes. apparatus comprising a wheeled truck and a unitary mining machine of the separately operable type comprising cutting mechanism and carried on said truck and disposable relative thereto in difl'erent positions in which said cutting mechanism lies in diiferent planes, said machine and truck having cooperating part-s adapted to effect truck propulsion and including a driving member on said machine and a driven member on said truck, said driving member being so disposed on said machine that the position of its axis of r0- tation is the same with said machine disposed to locate said cutting mechanism in different planes.

'47. Mining apparatus comprising a wheeled truck and a unitary mining machine of the separately operable, swinging cutter bar type arranged to cut indifferent planes when supported in inverted positions on said truck, said machine being provided with a driving member whose axis of rotation is disposed in the intersection of the central longitudinal vertical plane and the central longitudinal horizontal plane of the machine and said truck having a driven member engageable with said driving member to effect propulsion of said truck when the machine is disposed on the latter in either of its inverted positions.

48. Mining apparatus comprising a wheeled truck and aunitary mining machine of the separately operable, swinging cutter bar type arranged to cut in different planes when supported in inverted positions on the truck, said truck being provided with a member adapted to be driven from said machine and to constitute a driving member for the truck wheels and said machine being provided with driving means adapted'to cooperate with said driven member and disposed midway between the sides of the machine. 1

l9. Mining apparatus comprising a wheeled truck and a unitary mining machine of the separately operable, swinging cutter bar type arranged to cut in different planes when supported in inverted positions on the truck, sald truck being provided with a member adapted to be driven from said machine and to constitute a driving member for the truck wheels and said machine being provided with driving means adapted to cooperate with said driven memher and disposed midway between the top in the central longitudinal vertical plane.

of the machine and said truck being provided with means positioned for driving by said driving member ineither inverted position of said machine.

51. Mining apparatus comprising a wheeled truck and a unitary mining machine of the separately operable, swinging cutter bar type arranged'to out in different planes when supported in inverted positions on the'truck, said machine being provided with a driving member rotating on an axis in the central longitudinal horizontal plane of the machine and said truck being provided with means positioned for driving by said driving member in either inverted position of said machine. V i

52. In a mining apparatus, a truck frame having running gear, a unitary, separately operable, mining machine having difl'erent surfaces on which it may be supportedduring operation and operable to cut in different planes when supported on said dif ferent surfaces, and means to connect said machine in driving relation to said-running gear when said machine is disposed on any of such surfaces on said frame,

In testimony whereof I afiix my signature. I v

MORRIS P. HOLMES. 

